ATD Tools ATD-3130, Operating Manual, Page: 14 / 36

14
Change the drive roller according to the follow-
ing steps:
1. Open the door to the welder drive com-
partment.
2. Remove the drive tension by loosening the
tension adjusting screw and lifting the Drive
Tension Adjustor up, away from the Drive
Tension Arm. Pull the drive tension arm
away from the drive roller.
3. If there is wire already installed in welder,
roll it back onto the wire spool hand-turning
the spool counterclockwise. Be careful not
to allow the wire to come out of the rear
end of the inlet guide tube without holding
onto it or it will unspool itself. Put the end of
the wire into the hole on the outside edge
of the wire spool and bend it over to hold
the wire in place. Remove the spool of wire
from the drive compartment of the welder.
4. Rotate the Drive Roller Cap counterclock-
wise and remove it from the Drive Roller.
5. Pull the Drive Roller off of the Drive Roller
Shaft.
Note: The drive roller has two wire size grooves
built into it. When installing the drive roller, the
number stamped on the drive roller for the wire
size you are using should be facing you. Use
only the proper size drive roller when using
your welder.
Table 4 indicates which drive roller groove
should be used with each wire diameter size.
Wire Diameter Drive Roller Groove:
.023 inch 0.6
.030 inch 0.8
.035 inch 0.8
Table 4.
Drive Roller Sizing
6. Find the side of the drive roller that is
stamped with the same wire diameter as
that of the wire being installed (see Figure
6). Push the drive roller onto the drive roller
shaft, with the side stamped with the
desired wire diameter facing you.
7. Reinstall the Drive Roller Cap and lock in
place by turning it clockwise.
8. Close the door to the welder drive compart-
ment.
INSTALL THE WELDING WIRE
WARNING
Electric shock can kill! Always turn the
POWER switch OFF and unplug the power cord
from the ac power source before installing wire.
1. Remove the nozzle and contact tip from
the end of the gun assembly.
2. Make sure the proper groove on the
drive roller is in place for the wire being
installed. If the proper groove is not in
place, change the drive roller as
described above.
3. Unwrap the spool of wire and then
the leading end of the wire (it goes
through a hole in the outer edge of the
spool and is bent over the spool edge to
prevent the wire from unspooling), BUT
DO NOT UNHOOK IT YET.
4. Place the spool on the spindle in such a
manner that when the wire comes the
spool, it will look like the top illustration
in Figure 7. The welding wire should
always come
the top of the spool into
the drive mechanism.
5. If you are installing a four-inch spool of
wire, install the drive brake hardware on
the top of the spool of wire according to
-
Figure 5. Drive Roller Adjustments
Figure 6. Drive Roller